(4) When an election broadcasting debate commission of each level holds interviews or debates referred to in paragraphs (1) through (3), it shall hold them by inviting any of the following candidates. In such cases, candidates who are invited by an election broadcasting debate commission of each level to the interviews and debates shall participate therein unless there is a compelling reason not to do so: <Amended on Aug. 4, 2005; Jan. 25, 2010> 1. A presidential election: (a) Candidates nominated by political parties having five or more members of the National Assembly belonging thereto; (b) Candidates nominated by political parties that have obtained 3/100 or more votes of the total number of nationwide valid ballots in the immediately preceding presidential election or the immediately preceding election of proportional representation members of the National Assembly, proportional representation members of City/Do councils or proportional representation members of autonomous Gu/Si/Gun councils; Candidates recommended by the political parties that have obtained 3/100 or more votes of the total number of nationwide valid ballots in the election of autonomous Gu/Si/Gun council members. (c) Candidates who occupy 5/100 or more support ratios averaging the results of public opinion poll conducted and publicized by the press under the conditions as set by the National Election Commission Regulations during the period from 30 days prior to the beginning date of election period to the day immediately preceding the beginning date of election period; 2. An election of proportional representation members of the National Assembly or proportional representation members of City/Do councils: (a) Candidates designated by the representative of political party falling under subparagraph 1 (a) or (b); (b) Candidates designated by the representative of political party that has obtained 5/100 or more supports averaging the results of public opinion poll pursuant to subparagraph 1 (c); 3. An election of constituency members of the National Assembly or the heads of local governments: (a) Candidates nominated by political parties falling under subparagraph 1 (a) or (b); (b) Candidates who have obtained 10/100 or more votes of the total number of valid ballots by running in a presidential election, an election of constituency members of the National Assembly or an election of the heads of local governments (including the special elections) in the relevant constituency in the recent four years (including where the district of constituency was altered and the altered district overlaps with the district of immediately preceding election); (c) Candidates whose support ratio averaging the results of public opinion poll referred to in subparagraph 1 (c) is 5/100 or more. (5) An election broadcasting debate commission of each level may hold the interviews or debates for candidates who are not subject to the invitation referred to in paragraph (4). In such cases, the time and frequency of the interviews and debates may be determined by the National Election Commission